Furnace-arch construction



Aug. 4, 1925. 1,548,544

C. N. MORGAN ET AL. FURNACE ARCH CONSTRUCTION Filed March 22. 1924 Fla.)

n6. 5 I *F/ z v /NVENTOR5 Char/e5 N /70rga/7 finarew L .Kea/er ATTORNEXPatented Aug. 4, 1925.

UNITED STATES PATENT OFFICE.

CHARLES N. MORGAN, OF ALBANY, AND ANDREW L. KEELER, OF TROY, NEW YORK.

FURNACE-ARCH CONSTRUCTION.

Application filed March 22, 1924. Serial No. 701,085.

To all whom it may concern:

Be it known that we, CHARLES N. Mon- GAN and ANDREW L. KEELER, citiZenSof the United States, and residing, respectively, at Albany, in thecounty of Albany, State of New York, and Troy, in the county .ofRensselaer, State of New York, have invented new and useful Improvementsin Furnace-Arch Constructions, of which the following is aspecification.

Our invention relates to furnace arches, and particularly to the endconstruction of furnace arches of any type.

In arches of this character, due to the intense heat to which they areexposed, it is necessaryto provide for considerable expansive movementof the structure, and also to protect the steel work which supports therefractory portion of the arch from the direct influence of the furnacegases. The inner end of the arch, adjacent the boiler, which is exposedto particularly intense heat, is so designed as to form a base orsupport for the superimposed curtain wall which extends upwardly fromthe arch to the boiler, and it is desirable that the refractory units inthis part of the arch should be so designed and supported as to bereadily removable and renewable without substantially disturbing thecurtain Wall above, or other portions of the arch structure.

The objects of our invention, therefore, are to provide an endconstruction for a furnace arch which will permit the necessaryexpansive movement of the structure without destroying or injuring itsintegrity, which will thoroughly protect the steel work from theinfluence of the hot 4 furnace gases; which will be supported entirelyindependently of the main arch; and in which disintegrated blocks may bereadily removed and renewed without substantially disturbing portionssuperimposed thereon and normally sup-ported thereby.

e accomplish these objects by utilizing the novel form of refractoryblocks and means for supporting these blocks, together with the novelarrangement and combination of these with other features illustrated inthe accompanying drawing, in which Fig. l is a fragmentary perspectiveview of our end construction shown in connection with a suspended flatarch;

F ig. 2 is a fragmentary elevation of our end construction as viewedfrom inside the furnace;

Fig. 3 is a section of Fig. 2 on the line 33, showing details of thesupporting means.

In the drawing, 1 represents the end blocks of the arch which may besubstantially quadrantal in section, as shown. 2 represents in a generalway the main arch, and 3, the curtain wall which has one course ofblocks supported on the corner blocks, 1. The corner or end blocks, 1,have an upper horizontal face, 5, a rear vertical face, 6, and arepreferably but not necessarily provided with a curved face, 4., exposedto the fire. The upper face, 5, of the end block is provided with avertical channel,

or recess, 7, extending across the block; and

the rear face, 6, is provided with a similar channel or recess, 8, whichextends horizontally across the rear of the block. These channels arerespectively adapted to receive a vertical lug or lip 9, and ahorizontal lug or lip, 10, of an angular metal hanger, 11,'whioh extendsaround the upper rear corner of the block. The weight of the block issupported upon lip, 10, and lip, 9, merely prevents the block fromtipping forward. 'It will be noted that there is some space between theangular part of the hanger, 11, and the block, 1, and between the outersides of the lips and the channels, so that the block and hanger aresomewhat loosely associated. This provides for expansion in the blockitself. The hanger, 11, is provided with an upwardly extending leg, 12,having a hooked end, 13, adapted to engage the flange of a standardchannel, 14:, which is attached to the bottom flange of the supporting Ibeam, 15. The bill of the hook is short and fits rather loosely over thechannel so as to permit the hanger and its associated block to swing orpivot freely to the front and upwardly about the edge of the channel,14, as an axis. To hold the hanger and its associated block in itsproper position, and so that the faces, 5 and 6, are horizontal andvertical, respectively, the horizontal leg of the hanger extendssubstantially. parallel to the web of the channel, 14, and is providedwith a small, upwardly projecting boss or lug, 16, which rests againstthe web of the channel. Supported upon the horizontal faces, 5, of theblocks, 1, is a course of blocks, 17 The blocks, 17, are of such lengththat they span two or more of the blocks, 1, and are offsuch. heightthat they extend somewhat above the upper flange of the I beam, 15.

The lintel blocks, 18, which support the superimposed curtain wall,break joints with the blocks, 17, and are carried by the I beam, 15'.That portion of the lower face of each block, 18, which extends over thecourse of blocks, 17-, is notched out to provide a recess, 20, betweenthe blocks, 17 and 18, which is sealed with some elastic, nonconductingand non-combustible substance, such as asbestos, to form an expansionjoint, 21. In practice, we prefer to make this joint from to inches inthickness.

From a consideration of the foregoing in connection with the drawing, itwill beapparent-that theexpansive thrust of the main arch will swing theblock, 1, and the hanger in an outward and upward direction about theedge of the channel, 1 1, as an axis, and that the movement {willbeabsorbed in the compression of the elastic material in the expansionjoint, 21. It will also be appar-.

cut that any block, 1, may be conveniently removed by first removingonly the block, 17, whichis immediately above it. This will permit theblock, 1, and its associated hanger to be lifted from the channel sothat a new block maybe positioned on the hanger and placed in the arch.This operation will not disturb the curtain wall above for it will besupported on the lintels, 18; and it is obvious that the main arch whichis wholly separate from, and independent of our end construction willnot be disturbed. Furthermore, since the-end blocks, 1, cannot swinginwardly beyond the vertical because of the arrangement ,and design ofthe hangeig it isobvious that the units, 22, of the main arch, which areadjacent the blocks, 1, may be removed and replaced without disturbingthe, end construction.

In cases where the curtain wall is, of such height and weight as toproduce an excessive load on the I beam, 15, the wall may be supportedby auxiliary beams imbedded therein, and this isthe usual and ordinarypractice followed. v

For the purpose of clearly illustrating the present invention, we haveshown our end construction in connection with a sus pended ;arch of theform described and claimed in our copending application SerialNo.-631,935, but no claims are made herein to the subject-matter of thatapplication.

Having thus described our invention in its referred form and embodiment,we wish it understood that changes in the details of parts andarrangements thereof may be made without departing from the scope andspirit of the invention as defined in the app ended claims.

1. As an article of manufacture, a hanger for a furnace arch block,comprising a metal angle provided with lugs adapted to engage adjoiningsides of said block, and means for pivotally engaging a supportingmeans.

2. Asan articleof manufacture, a hanger for a furnace arch block,comprising a metal angleadapted to receive an edge of said blocktherein, inwardly projecting lugs at the edges of the angle adapted toengage said block in recesses provided therein, and means disposed fromthe vertex of said angle for pivotally engaging a supporting means.

3. In a furnace arch construction, the combination with a supportingbeam provided with a hook receiving edge, of a metal hanger for arefractory block suspended therefrom; said hanger being provided withmeansfor pivotally'engaging said edge, and having a portion extendingunder and normally in contact with the bottom of said beam, wherebyrotation of said hanger in one direction is prevented.

4. In a furnace arch construction having a mainarch and a curtainwallassociated therewith, a corner construction intermediate the arch-andwall comprising an axially suspended block swinging freely under'the.expansive thrust of the main arch, and forming, independent of said mainarch, a support for a portion-of said curtain wall;

5. In a furnace arch construction, the combination with a refractorybloclrfornr ing an end unit for said-arch, of ,a metal hanger adapted tobe pivotally suspended from'a supporting beam andprovided with angularportions engaging an edge of said beam and grasping into adjoining facesof aid block. 1

6. In a curtain wall construction for a furnace arch, comprising asupporting means including a channel having upturned flanges; a block,forming a support for a portion of said wall, suspended froma flange ofsaid channel bymeans of an angular hanger pivota-lly engaging'a flangeof said channel and extending partially around said block and the web ofsaid channel, whereby said block andhangerinay swing freely away fromsaid channel but -1nove mentin the opposite' direction is prevented; andanexpansion joint intermediate said blockandan independently supportedportion of said wall for absorbing the movement of the block.

7. An end wall construction for a furnace arch comprising a beamprovided with an-upwardly extending flange and forming an independentsupport for the portion of said wall superimposed thereon; a course ofblvcks suspended below said beam by means pivotally engaging said flangeand having a portion disposed from said flange and retained against thebottom of said beam by the weight of said blocks, whereby said course ofblocks is adapted to form a stable support for aportion of said wallresting thereon.

8. In a furnace arch, a corner construction intermediate angularlydisposed portions of said arch comprising a block, a hanger for saidblock, and a supporting means for said hanger; said means including anaxis for pivotally suspending said hanger to swing freely in onedirection and means for preventing movement of said hanger in a counterdirection.

9. In a furnace arch construction the combination with a main archportion of an end block therefor and axially suspended means supportingsaid block and swinging freely under the expansive thrust of the mainarch; said means being provided with portions coacting with a supportingmeans for said block to limit the counter swing thereof.

10. In a furnace arch construction the combination with a main archportion of an end block therefor forming a support for a superimposedwall, and an axially suspended hanger for supporting said block to swingfreely under the expansive thrust of the main arch; said hanger beingprovided with means fixedly securing it to said block and means coactingwith a supporting means therefor to limit the counter swing of saidblock and maintain said wall substantially vertical.

11. A hanger for a furnace arch block comprising a body portion havingangularly disposed members, lugs projecting from said members atsubstantially right angles to each other and adapted to grasp intoadjoining angularly disposed faces of a block, and means for attachingsaid hanger to a supporting means. 7

12. A hanger for a furnace arch block comprising a metal angle providedwith lugs projecting inwardly from the legs of said angle adapted tograsp into adjoining sides of a rectangular block, and means forattaching said hanger to a supporting means.

GHARLES N. MORGAN. ANDREW L. KEELER

